Findings: PLAIN RADIOGRAPH: A-P and lateral views of the right femur from 7/9/2002 demonstrate no bone abnormalities. No soft tissue abnormalities are evident. MRI: A right rectus femoris mass measuring 4.5x2.4x2.5cm shows intermediate- signal intensity periphery with low-signal-intensity center on T1-weighted MR images and predominantly high signal intensity mass on T2-weighted MR image with low-signal-intensity septae posteriorly. After contrast-enhancement, there is a thick rim of peripheral enhancement with non-enhancing areas centrally. These findings were consistent with a myxoid liposarcoma.

Ddx: Myxoid liposarcoma, Myxoid malignant fibrous histiocytoma

Exam: The patient is a well-developed, muscular, well-nourished white man in no apparent distress. There is a palpable mass of the distal right anterior thigh. He weighs 214# and is 5'11" tall. There is no palpable lymphadenopathy in the neck, supraclavicular, or axillary areas.

Findings: PLAIN RADIOGRAPH: A-P and lateral views of the right femur from 7/9/2002 demonstrate no bone abnormalities. No soft tissue abnormalities are evident. MRI: A right rectus femoris mass measuring 4.5x2.4x2.5cm shows intermediate- signal intensity periphery with low-signal-intensity center on T1-weighted MR images and predominantly high signal intensity mass on T2-weighted MR image with low-signal-intensity septae posteriorly. After contrast-enhancement, there is a thick rim of peripheral enhancement with non-enhancing areas centrally. These findings were consistent with a myxoid liposarcoma.

Ddx: Myxoid liposarcoma, Myxoid malignant fibrous histiocytoma

Exam: The patient is a well-developed, muscular, well-nourished white man in no apparent distress. There is a palpable mass of the distal right anterior thigh. He weighs 214# and is 5'11" tall. There is no palpable lymphadenopathy in the neck, supraclavicular, or axillary areas.